Question

find the sum of the lengths of the basis of trapezium whose altitude is 17 cm and whose area is 0.85 m square

Answer 1

Answer:

So (a+b)= 10

Step-by-step explanation:Area of a trapezium is given by

A=0.5 x (sum of parallel sides) x height

Considering the sides to be 'a' and 'b' respectively the formula thus becomes

A=0.5 x (a+b) x height

Substituting values further

0.85=0.5 x (a+b) x 0.17

Converting them to fractions would save time hence

(85/100)=(5/10) x (a+b) x (17/100)

Which further reduces to

170= 17 (a+b)

So (a+b)= 10